If you look closely at the top of the pile of rust, that little half moon shaped object above whats left of the hanger is some kind of putty the PO used to patch holes!

It was a complete bolt up, except for the last hanger was modified by the PO and it rusted off with the pipe on the left that went up and over the rear axle. So I went to AutoZone and got a universal hanger that slipped under the last clamp and bolted through an existing hole in the frame just forward of the tank, you can see it in the wheel well third picture, didn't utilize the hook on the last section from Gibson.

Sound wise it's a lot quieter than it was, even before it fell apart, but still has a slight rumble.